src/java.base/share/classes/jdk/internal/classfile/constantpool/ConstantPool.java - master - niceSOFT/openjdk21

src/java.base/share/classes/jdk/internal/classfile/constantpool/ConstantPool.java

63 строки2 KB

Adam Sotona

8294982: Implementation of Classfile API

09 мар 2023, 18:23

09 мар 2023, 18:234655b79

/*
 * Copyright (c) 2022, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package jdk.internal.classfile.constantpool;

import jdk.internal.classfile.BootstrapMethodEntry;
import jdk.internal.classfile.ClassReader;

/**
 * Provides read access to the constant pool and bootstrap method table of a
 * classfile.
 */
public sealed interface ConstantPool
        permits ClassReader, ConstantPoolBuilder {

    /**
     * {@return the entry at the specified index}
     *
     * @param index the index within the pool of the desired entry
     */
    PoolEntry entryByIndex(int index);

    /**
     * {@return the number of entries in the constant pool}
     */
    int entryCount();

    /**
     * {@return the {@link BootstrapMethodEntry} at the specified index within
     * the bootstrap method table}
     *
     * @param index the index within the bootstrap method table of the desired
     *              entry
     */
    BootstrapMethodEntry bootstrapMethodEntry(int index);

    /**
     * {@return the number of entries in the bootstrap method table}
     */
    int bootstrapMethodCount();
}